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  #1  
Old 09-21-2009, 10:18 PM
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Default all headlights on mod...

alright guys i did this mod i came across on a diff. forum and it works awesome... it makes it so when your high beams are on it also keeps your low beams on... ill post the instructions to it later if people are interested, but i just figured id let people know that its possible for pretty much under a buck...
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Old 09-21-2009, 11:37 PM
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Yeah I bought the relay years back and it works well. But now that I have my H.I.D. lights, it only works sometimes so show what ya did friend.
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Old 09-22-2009, 05:59 AM
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ok this is quoted from unit 453 over at dtr just to give credit where credit is due...

Pull the underhood electrical center cover off, place aside. Unbold the four bolts holding the drivers side corner brace (fender to firewall) and remove. This is to remove the cover surround on the electrical center. Gently pry the plastic snaps holding it in place. There are two between it and the fender and two large hooks toward the passenger side at the bottom. Now lift off the plastic cover for the electrical center. You will see two clips holding the electrical center close to the fender side while the two toward the passenger side are hinges. Release the two by the fender and roll the electical center towards the passenger side. The mess of wires will tug a little but it will roll over to expose the underside. Looking at the right underside you will see a grey wire block. There are small letters and numbers identifying the wires. Look for D3 and you will find a yellow wire. This is the control for the low beams. Is is switched ground on the 01-02s unlike the 03-04s. All you need to do is get a scotchlock (or solder if you prefer) and tap the yellow wire to ground. I ran it in a loom up to the ground studs on the firewall (follow your underhood light wires down if you can't find one). That's it, test it out and fold the center back down. Recover and replace the brace.

and just to clarify that it will only work on the 99-02 series trucks as the newer ones use seperate relays for high and low beams to switch the headlights, but instead 99-02 use one relay to power the headlights and a ground switched by the headlight switch/dimmer on the column to go between high and low beams. so all you have tio do is ground that yellow wire and ur lows will work with your highs... i also know how to do it on the newer trucks if anyone is interested...
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  #4  
Old 09-23-2009, 12:19 AM
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Sweet!! Thx for the info!!
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  #5  
Old 10-04-2009, 11:21 PM
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hey there, can you post the instructions on going about doing that,, thanks a lot.
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  #6  
Old 01-02-2012, 08:07 PM
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What do you have to do for the newer model trucks?
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  #7  
Old 01-04-2012, 03:31 AM
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Hey there I got a 2006 silverado and recently put low beam hids on, but when set on auto they still stay on in the daytime. You know of how to fix this?
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  #8  
Old 01-04-2012, 07:10 AM
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How about a 97 GMC? Can it be done on it?
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Old 01-04-2012, 07:10 AM
 
 
 
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